Distinction Due to Deficiency in Knowledge
This dual naming of matter and spiritual affair does not explain the existing verity. It is due to the deficiency of human beings’ senses. When the substance and essence of the universe were in the material form and was therefore visible, human beings could sense and touch it. However, when it was in a delicate and ethereal form, human beings were incapable of seeing, touching and sensing it. While in fact, both existing forms are forms of one essence.
For example, imagine the invisible particles of clouds. When they are delicate, they are invisible and obscure for human beings and are particles of air. Nevertheless, when they become compressed and aggregated, they turn into clouds that we can see.